Why the value of a doesn't change?

Question

#include <iostream>
using namespace std;

int main() {
const int a = 10;
const int *aPtr = &a;

int *aPtr2 = const_cast<int *>(aPtr);
*aPtr2 = 20;

cout << a << endl;
cout << *aPtr << endl;
cout << *aPtr2 << endl;
return 0;
}

//Output
10
20
20

Why the value of a is not changed when the value of *aPtr and *aPtr2 is changed. They both are pointing to same memory location where a is stored.
So where the value 10 is stored and where value 20 is stored?

Answer 1

Feichtinger Andreas I couldn't understand your answer, can you elaborate more?

Answer 2

But you didn't answer my question where the values 10 and 20 are stored?

Answer 3

Because they are constants and not variables
Try it with 'var' instead of 'const'

Answer 4

Int main () {
var Int a = 10;
var Int *aPtr = & a;